Theoretical investigation of ion conduction in three-layered ion-conductor systems: Derivation of the isothermal transient ionic current and frequency-dependent impedance

Autor:	Maria Strømme, Göran Frenning, Anna-Lena Larsson, A.K. Jonsson
Rok vydání:	2003
Předmět:	Chemistry Analytical chemistry General Physics and Astronomy Ionic bonding Ionic conductivity Transient (oscillation) Diffusion (business) Thermal conduction Electrical impedance Electrical conductor Molecular physics Ion
Zdroj:	Journal of Applied Physics. 94:1629-1638
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1590062
Popis:	Ion conduction in three-layered ion-conductor systems is considered. Explicit analytic expressions for the isothermal transient ionic current and frequency-dependent impedance are derived. The analysis includes migration, diffusion and space-charge effects as contributors to the ionic motion. The resulting model allows conduction parameters such as diffusion coefficients and ion concentrations in three different layers to be obtained from one single measurement, either in the time or in the frequency domain. The implications of one or more of the layers being mixed ionic/electronic conductors are discussed, and it is argued that the proposed model provides a useful description of the coupled ionic/electronic motion occurring in such a mixed-conductor system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d81c07f8e7d8d2e3d213d4b0d73ebab2 https://doi.org/10.1063/1.1590062 Zobrazit plný text záznamu